1. Backiyavathy, M R and Vijayakumar, G. Effect of vermicompost, inorganic and bio fertilizer application on fodder yield and quality in maize + cowpea intercropping system. 18th World Congress of Soil Science in Philadelphia. from July9–152006, Pennsylvania, USA.
2. Effect of Organic and Inorganic Nutrients for Soil Quality Conservation and Yield of Rainfed Low Land Rice in Sub-tropical Plateau Region
3. Behara, U K. Sustaining the productivity of wheat-soybean cropping system trough integrated nutrient management practices in the vertisols of Central India. 18th World Congress of Soil Science in Philadelphia. from July9–152006, Pennsylvania, USA.